[dpdk-dev] pktgen offload checksum flag not able to make it work with pacp packets.
banveerad at gmail.com
Sat Jan 25 23:53:44 CET 2014
Thanks a lot for the reply !
Yes I have checked those examples and had set all those flags. But IP
checksum started working after commenting off the txq_flags from
the pktgen.c file's tx_conf .
And I added the following flag to calculate the tcp checksum.
m->ol_flags |= PKT_TX_TCP_CKSUM
its calculating the TCP checksum but turning out to be wrong checksum.
On Fri, Jan 24, 2014 at 11:44 AM, Wiles, Roger Keith <
keith.wiles at windriver.com> wrote:
> I have not enabled that feature myself, but I would expect it to work as
> long as the hardware does. What does the docs say about enabling hardware
> offload support? Did you look at the following files:
> ip_reassembly/ipv4_rsmbl.h: m->ol_flags |= PKT_TX_IP_CKSUM;
> ipv4_frag/rte_ipv4_frag.h: out_pkt->ol_flags |=
> *Keith Wiles*, Principal Technologist for Networking member of the CTO
> office, *Wind River*
> mobile 940.213.5533
> [image: Powering 30 Years of Innovation]<http://www.windriver.com/announces/wr30/>
> On Jan 24, 2014, at 12:54 PM, Banashankar KV <banveerad at gmail.com> wrote:
> I was modifying a packet in pktgen_pcap_mbuf_ctor()
> and after modifying I wanted to offload the checksum calculation to h/w
> so I am setting these flags in pktgen_pcap_mbuf_ctor function.
> m->pkt.vlan_macip.f.l2_len = sizeof(struct ether_hdr);
> m->pkt.vlan_macip.f.l3_len = sizeof(struct ipv4_hdr);
> m->ol_flags = PKT_TX_IP_CKSUM
> I even tried with setting .txq_flags = 0 in rte_eth_txconf struct in
> But still not able to get the h/w checksum. Am I missing anything ?
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